SB20260624102 - openEuler 22.03 LTS SP4 update for httpd
Published: June 24, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2026-29167)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in mod_ldap per-directory configuration when processing per-directory configuration. A local user can trigger processing of affected per-directory configuration to cause a denial of service.
2) Cross-site scripting (CVE-ID: CVE-2026-29170)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary script in a victim's browser.
The vulnerability exists due to cross-site scripting in mod_proxy_ftp HTML directory list generation when listing FTP directory contents via forward or reverse proxy configuration. A remote attacker can control FTP directory listing content to execute arbitrary script in a victim's browser.
The issue occurs during FTP directory listing generation.
3) Buffer overflow (CVE-ID: CVE-2026-34355)
CWE-ID: CWE-120 - Buffer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to buffer overflow in mod_proxy_html when processing content from an untrusted backend. A remote attacker can operate an untrusted backend to cause a denial of service.
4) Heap-based buffer overflow (CVE-ID: CVE-2026-34356)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to heap-based buffer overflow in ProxyPassReverseCookie* processing when interacting with malicious backend servers. A remote attacker can operate a malicious backend server to execute arbitrary code.
5) Path traversal (CVE-ID: CVE-2026-42535)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper path handling in mod_dav_fs when a WebDAV content author directly manipulates trusted DAV property databases. A remote user can manipulate trusted DAV property databases to cause a denial of service.
The issue may cause child process crashes.
6) Heap-based buffer overflow (CVE-ID: CVE-2026-42536)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to heap-based buffer overflow in mod_xml2enc xml2StartParse when parsing untrusted content. A remote attacker can supply crafted content to execute arbitrary code.
7) Improper privilege management (CVE-ID: CVE-2026-44119)
CWE-ID: CWE-269 - Improper Privilege Management
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper privilege management in expression handling in .htaccess across multiple modules when processing .htaccess expressions. A local user can author .htaccess expressions to disclose sensitive information.
The issue allows reading files with the privileges of the httpd user.
8) Infinite loop (CVE-ID: CVE-2026-44186)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an infinite loop in proxy_ftp_handler in mod_proxy_ftp when interacting with an attacker-controlled backend FTP server. A remote attacker can operate a malicious backend FTP server to cause a denial of service.
9) Out-of-bounds write (CVE-ID: CVE-2026-44631)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to out-of-bounds write in ap_regname when processing crafted regular expressions in the configuration. A local user can place crafted regular expressions in the configuration to cause a denial of service.
Remediation
Install update from vendor's website.